jquery.scrollfollow.js 浏览器上下滚动（浮动）

参照 http://kitchen.net-perspective.com/sf-example-1.html

	<script type="text/javascript" src="jquery.js"></script>


   	<script type="text/javascript" src="jquery.scroll-follow.js"></script>

	<script type="text/javascript">

   		$( document ).ready( function ()

			{

				$( '#example' ).scrollFollow();

			}

		);

   	</script>

html

<div id="example">

	

		<img src="/images/ducks.png" alt="Ducks" />

		

		<p>

			This is a simple example of Scroll Follow. Scroll down to see what happens.

		</p>

		

		<p>

			<a href="http://kitchen.net-perspective.com/open-source/scroll-follow/">Back to Scroll Follow home.</a>

		</p>

	</div><!--end #example-->

定义区域会随着浏览器滚动条的上下滚动，而移动（浮动在界面上）